Air-compressor.



No. 635,5!7. Patented Oct. 24, |899.

J. P. SIMMoNs. Am coMPnEsson.

(Application filed Feb. 23, 1898.) (No Model.)

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UNITED STATESv ATHNT JOHN P. SIMMONS, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO SQUIRE V. MOONEY, OF SAME PLACE.

AlR-COIVPRESSOR,

SPECIFICATION forming' part of Letters Patent No. 635,517, dated Octoberl 24, 1899.

Application filed February 23, 1898. Serial No. 671,379. (No model.)

To a/ZZ whom, it may concern:

Be it known that I, JOHN P. SIMMONS, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented certain new and useful Improvements in Air Compressors;

and I do hereby declare the following to be a full, clear, and exact description of the same.

The invention relates to the class of machines for compressing air and other compressible fluids, and it refers particularly to the power connection between the 'compressor-V piston and the motor-piston.

The object of the invention is to provide a simple, compact,- and efficient compressor. I attain this object by means of the devices illustrated in the accompanying drawing, which is a side elevation of my invention, portions being shown in section to more clearly illustrate it.

Referring to the drawing, A is the motorcylinder, and A is its piston-rod.

B is the compressor-cylinder, and B' its piston-rod.

C is a connecting-rod of the motor-cylinder piston-rod A and crank-shaft. From this rod C, near one of its ends, projects an arm c, forming, with rod C, a bell-crank. To this projecting arm c is suitably connected to be driven thereby the compressor piston-rod B of the compressor-cylinder B.

The crank-shaft D is provided with a suitable fly-wheel E and is journaled in a suitable frame or bedeplate.

The arrangement thus described transmits from the power-piston motion to the compressor-piston of a peculiar character, where by the motive power is applied in most de sirable way, in that at the time when compression is most intense the direct action of the steam is applied to compression instead of, as is usual, applying power stored up in the fly-wheel. In other words, the piston of the compressor reaches its extremes of reciprocation considerably ahead of the power-piston and while the power-piston is being im pelled by the direct action of the steam and not while it is being carried over the deadcenter by the momentum of the fly-Wheel.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent,is-"

l. In a compressor a power-cylinder and piston therein, a compressor-cylinder and a piston therein, a crank-shaft and a bell-crank connecting-rod connecting the power-piston crank and compressor-piston by its attachment to the bell-crank.

2. In a compressor a power-cylinder and a piston therein, a compressor-cylinder and a piston therein said cylinders being arranged with respect to each other, in the same vertical plane but their centers in different horizontal planes and a bell-crank connecting-rod connecting the power-piston and crank, 'and connecting the compressor-piston by its attachment to the bell-crank.

JOHN P. SIMMONS. 

